There has been no update for at least a year. If you go to his site, he has a list of things he's considering and things he isn't ever going to consider. I only use it as a notepad replacement. In this, it is perfect: small, fast, with a few extra features. Anything more robust requires a full fledged editor. I use ScitTe for AutoIt and Keynote for writing... Notepad2 is great (though I wouldn't mind an update!)

It's really great indeed, under active development, and (some, anyway ) feature requests tend to be implemented. If you're a programmer, shouldn't be hard to write stuff for it yourself, since it's based on scintilla. I've written a couple of plugins I use, which are quite helpful

What a timely topic. I was googling around last nite to see references to Notepad2 and found out a couple of people have updated Notepad2 from the source code, although the official package has not been updated in awhile. Updates were mainly related to support for Ruby.